add compose file to quickly stand this up

docker-compose.yml

@@ -0,0 +1,19 @@
+version: "3"
+services:
+  subsonic:
+    #image: vbatts/subsonic
+    build:
+      context: .
+      dockerfile: Dockerfile
+    ports:
+      - 0.0.0.0:4040:4040/tcp
+      - 0.0.0.0:4043:4043/tcp
+    restart: always
+    volumes:
+      - /mnt/data/subsonic:/opt/data/ 
+      - /mnt/data/Videos/:/opt/Videos:ro
+      - /mnt/data/Audio/:/opt/music:ro
+      - /mnt/data/storage/syncthing/Music/:/opt/syncthing:ro
+#networks:
+#  host:
+#    external: true